Area Code Center The Complete US Area Code & Location Directory
US Area Codes
Connecticut

959 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 959 area code is an overlay serving northern and eastern Connecticut, including the state capital of Hartford. Introduced in 2014, it…

Connecticut
Connecticut

428 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 428 area code is a new statewide overlay covering all of Connecticut. Unlike the state’s regional codes, 428 is not tied…

Connecticut
Connecticut

203 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 203 area code serves southwestern Connecticut, including Fairfield and New Haven counties. One of the original area codes assigned in 1947,…

Connecticut
Connecticut

475 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 475 area code is an overlay serving southwestern Connecticut, including Fairfield and New Haven counties. Introduced in 2009, it was layered…

Connecticut
Connecticut

860 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 860 area code serves northern and eastern Connecticut, anchored by the state capital of Hartford. Created in 1995 when it split…

Connecticut
Oklahoma

539 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 539 area code is an overlay serving northeastern Oklahoma, including Tulsa and the Green Country region. Introduced in 2011, it was…

Oklahoma
Oklahoma

580 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 580 area code serves western and southern Oklahoma, including Lawton, Enid, and Ardmore. Created in 1997 when it split from 405,…

Oklahoma
Oklahoma

405 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 405 area code serves the Greater Oklahoma City metropolitan area, the population and government center of the state. One of the…

Oklahoma
Oklahoma

572 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 572 area code is an overlay serving the Greater Oklahoma City metropolitan area. Introduced in 2021, it was layered directly on…

Oklahoma
Oklahoma

918 Area Code: Location, Time Zone, Major Cities & Scam Alerts

The 918 area code serves northeastern Oklahoma, anchored by Tulsa, the state’s second-largest city. Created in 1953 when it split from 405,…

Oklahoma